Asparagus Salad with Celery Leaves Quail Eggs and Tarragon Vinaigrette

Name: Asparagus Salad with Celery Leaves, Quail Eggs, and Tarragon Vinaigrette
Ingredients: 8 quail eggs; 1 pound green asparagus (preferably thin), trimmed; Kosher salt to taste; 2 tablespoons white-wine vinegar (preferably tarragon); 2 teaspoons whole-grain mustard; 1 teaspoon Dijon mustard; 1/3 cup safflower or grapeseed oil; 1 small shallot, thinly sliced into rings; 3 teaspoons coarsely chopped fresh tarragon; 1 cup pale green celery leaves (from center of bunch)